I remember reading a debate on another forum about just how hot it gets when the beans are left in the sun to ferment under the leaves.
It's probably a lot better than the regular brand at the grocery store, but for a while there I was buying regular organic cocoa from my health food store due to the price. I think we'll be seeing it offered more at our local health food stores.
Anyway, I like the Nativas brand, they actually have all their certifications up on their site and test all the time for purity.
http://www.navitasnaturals.com/certifications.html